rank객체 date 추가

src/app.ts

@@ -2,7 +2,7 @@ import express from 'express';
 import type { Request, Response } from 'express';
 import helmet from 'helmet';
 
-import { contains } from './util';
+import { contains, dateToString } from './util';
 import {
   DIFFICULTY,
   binarySearchInsert,
@@ -39,10 +39,12 @@ app.get('/register/:diff', (req: Request, res: Response) => {
   if (!req.query || !req.query.name || !req.query.sec)
     return void res.send(false);
 
+  const now = new Date();
+  const date = dateToString(now);
   const name = req.query.name as string;
   const sec = parseFloat(req.query.sec as string);
 
-  const rank = { name, sec };
+  const rank = { date, name, sec };
 
   binarySearchInsert(store[diff], rank);
 
@@ -72,9 +74,13 @@ app.get('/delete/:diff', (req: Request, res: Response) => {
   res.send(true);
 });
 
-app.get('/save', (req: Request, res: Response) => {
-  writeStoreToFile(store);
-  res.send(true);
+app.get('/save', async (req: Request, res: Response) => {
+  try {
+    await writeStoreToFile(store);
+    res.send(true);
+  } catch (err) {
+    res.send(false);
+  }
 });
 
 // 1시간 마다 파일에 저장

src/store.ts

@@ -1,11 +1,12 @@
-import { readFileSync } from 'fs';
+import { readFileSync, existsSync } from 'fs';
 import { writeFile } from 'fs/promises';
 
 export const DIFFICULTY = ['easy', 'normal', 'hard'] as const;
 const FILE_PATH = './ranks.json';
 
 // TODO: add Date
 export interface Rank {
+  date: string;
   name: string;
   sec: number;
 }
@@ -15,7 +16,16 @@ export interface Store {
   hard: Rank[];
 }
 
+const getDefaultStore = (): Store => ({
+  easy: [],
+  normal: [],
+  hard: [],
+});
+
 export function readStoreFromFile(): Store {
+  // 없으면 객체를 새로 생성
+  if (!existsSync(FILE_PATH)) return getDefaultStore();
+
   // 프로그램 시작시에는 동기로 읽고 서버 열기
   const payload = readFileSync(FILE_PATH, 'utf-8');
   const store = JSON.parse(payload) as Store;
@@ -49,5 +59,6 @@ export function binarySearchInsert(arr: Rank[], data: Rank) {
     }
   }
 
+  // 탐색이 끝난 자리에 삽입
   arr.splice(low, 0, data);
 }

src/util.ts

@@ -4,3 +4,19 @@ export function contains<T extends string>(
 ): value is T {
   return list.some((item) => item === value);
 }
+
+export const dateToString = (date: Date) => {
+  return (
+    date.getFullYear() +
+    '-' +
+    date.getMonth() +
+    '-' +
+    date.getDate() +
+    ' ' +
+    date.getHours() +
+    ':' +
+    date.getMinutes() +
+    ':' +
+    date.getSeconds()
+  );
+};